Las variables de entorno pueden ser útiles para manejar **configuraciones** de aplicaciones, como parte de la **instalación** de Python, etc.

## Crear y Usar Variables de Entorno { #create-and-use-env-vars }

Puedes **crear** y usar variables de entorno en la **shell (terminal)**, sin necesidad de Python:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console
// Podrías crear una env var MY_NAME con

		}
		if !ok {
			t.Fatal("did not get write lock")
		}
		rUIDs = append(rUIDs, uid)

		// RLock twice, different uid
		uid = mustGetUUID()
		arg.UID = uid
		ok, err = l.RLock(ctx, arg)
		if err != nil {
			t.Fatal(err)
		}
		if !ok {
			t.Fatal("did not get write lock")
		}
		rResources[i] = name
		rUIDs = append(rUIDs, uid)
	}
	// Each Lock has m entries

# Distributed MinIO Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/)

# Probando una Base de Datos { #testing-a-database }

Puedes estudiar sobre bases de datos, SQL y SQLModel en la <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">documentación de SQLModel</a>. 🤓

Hay un mini <a href="https://sqlmodel.tiangolo.com/tutorial/fastapi/" class="external-link" target="_blank">tutorial sobre el uso de SQLModel con FastAPI</a>. ✨

       * Refer [windows setup guide](https://www.tensorflow.org/install/gpu#windows_setup).
     * If you have above configuration and using _**Ubuntu/Linux**_ platform -
       * Try adding the CUDA, CUPTI, and cuDNN installation directories to the $LD_LIBRARY_PATH environment variable.
       * Refer [linux setup guide](https://www.tensorflow.org/install/gpu#linux_setup).

# Probando WebSockets { #testing-websockets }

Puedes usar el mismo `TestClient` para probar WebSockets.

Para esto, usas el `TestClient` en un statement `with`, conectándote al WebSocket:

{* ../../docs_src/app_testing/tutorial002_py39.py hl[27:31] *}

/// note | Nota

import java.util.Map;
import org.junit.Ignore;

/**
 * Basic serialization test for maps.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class MapSerializationTester<K, V> extends AbstractMapTester<K, V> {

# Dex Quickstart Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io)

import random
from typing import Annotated, Union

from fastapi import FastAPI
from pydantic import AfterValidator

app = FastAPI()

data = {
    "isbn-9781529046137": "The Hitchhiker's Guide to the Galaxy",
    "imdb-tt0371724": "The Hitchhiker's Guide to the Galaxy",
    "isbn-9781439512982": "Isaac Asimov: The Complete Stories, Vol. 2",
}


def check_valid_id(id: str):
    if not id.startswith(("isbn-", "imdb-")):

Fess comprend également un Crawler, capable d'explorer les documents sur un [serveur web](https://fess.codelibs.org/15.3/admin/webconfig-guide.html), un [système de fichiers](https://fess.codelibs.org/15.3/admin/fileconfig-guide.html), ou un [Data Store](https://fess.codelibs.org/15.3/admin/dataconfig-guide.html) (comme un fichier CSV ou une base de données). De nombreux formats de fichiers sont pris en charge, y compris (mais sans s'y limiter) : Microsoft Office, PDF,...